adj_cellhd.c File Reference

GIS Library - CELL header adjustment. More...

#include <grass/gis.h>
#include <grass/glocale.h>

Include dependency graph for adj_cellhd.c:

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Functions
char *	G_adjust_Cell_head (struct Cell_head *cellhd, int row_flag, int col_flag)
	Adjust cell header.
char *	G_adjust_Cell_head3 (struct Cell_head *cellhd, int row_flag, int col_flag, int depth_flag)
	Adjust cell header for 3D values.

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Detailed Description

GIS Library - CELL header adjustment.

(C) 2001-2008 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author:

GRASS GIS Development Team

Date:

1999-2008

Definition in file adj_cellhd.c.

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Function Documentation

char* G_adjust_Cell_head	(	struct Cell_head *	cellhd,
		int	row_flag,
		int	col_flag
	)

Adjust cell header.

This function fills in missing parts of the input cell header (or region). It also makes projection-specific adjustments. The cellhd structure must have its north, south, east, west, and proj fields set.

If row_flag is true, then the north-south resolution is computed from the number of rows in the cellhd structure. Otherwise the number of rows is computed from the north-south resolution in the structure, similarly for col_flag and the number of columns and the east-west resolution.

Note: 3D values are not adjusted.

Parameters:

[in,out]	cellhd
[in]	row_flag
[in]	col_flag

Returns:

NULL on success

Localized text string on error

Definition at line 43 of file adj_cellhd.c.

References G_debug(), G_warning(), and NULL.

Referenced by G__read_Cell_head_array(), G_align_window(), and G_set_window().

char* G_adjust_Cell_head3	(	struct Cell_head *	cellhd,
		int	row_flag,
		int	col_flag,
		int	depth_flag
	)

Adjust cell header for 3D values.

This function fills in missing parts of the input cell header (or region). It also makes projection-specific adjustments. The cellhd structure must have its north, south, east, west, and proj fields set.

If row_flag is true, then the north-south resolution is computed from the number of rows in the cellhd structure. Otherwise the number of rows is computed from the north-south resolution in the structure, similarly for col_flag and the number of columns and the east-west resolution.

If depth_flag is true, top-bottom resolution is calculated from depths. If depth_flag are false, number of depths is calculated from top-bottom resolution.

Parameters:

[in,out]	cellhd
[in]	row_flag
[in]	col_flag
[in]	depth_flag

Returns:

NULL on success

Localized text string on error

Definition at line 194 of file adj_cellhd.c.

References G_debug(), G_warning(), and NULL.